Magnetic ore-separator.



No. 816,491.. PATENTED MAR. 27, 1906; R. R. MOFPATT.

MAGNETIC ORE SBPARATOR.

APPLICATION FILED 0016,1904.

2 SHEETSSHEET 1.

I w vhmeoo o 1 toz 3 351A 114k) 3 H0611 My.)

No. 816,491. 7 PATENTED MAR. 27, 1906. R. R.'MOFFATT.

MAGNETIC ORE SBPARATOR. APPLICATION FILED OUT. 6,1904.

2 SHEETS-SHEET 2.

(QM/WWW RICHARD R. h'IOFFA'lT, OF BROOKLYN, NEW YORK, ASSIGNOR TO IMPERIAL ORE NElV YORK.

SEPARATOR COMPANY, A OORPORATION OF MAGNETIC ORE-SEPARATOR- Specification of Letters Patent.

I?a.tented IVIarch 27, 1906.

Original application filed July 19, 1904, Serial No. 217,222. Divided and this application filed October 6, 1904. Serial No. 227,349.

' To all whom/it may concern:

i work of the device.

Be it known that I, RICHARD R. a citizen of the United States of America, and a resident of Brooklyn, county of Kings, and State of New Yon have invented certain new and useful Improvements in lHagnetic Ore-Separators, of which the following is a specification.

My invention relates generally ore-separators, and more especially to an apparatus for separating ore containing feeblymagnetic particles.

his application is a division of an application filed by me on July 19, 1904, Serial No. 2 17,222, for an improvement in magnetic oreseparators.

The, object of my invention is the production of an apparatus of a verypowerfulnature for separating feebly-magnetic ore simple and inexpensive in its character.

The invention. consists of a structure hav-- ing a fecd-conveyer and a plurality of separating-conveyersin the present instance two-in combination with a magnet comprising two or more sets of opposed poles, produc ing two fields of different intensity, two cores, each connecting one pole of one set in circuit with one pole of the other set, and side frames connecting the poles of the same set in circuit with each other. Preferably these side frames are provided with apertures through which the feed-conveyer passes.

The invention further comprises a structure embodying two parallel cores having poles of opposite nature, side-frame extensions terminating the said cores at both ends and arranged in apposition to each other, and means for {securing the said side-frame extensions together.

Other features of construction and combinations of parts will appear as the specification proceeds.

In the drawings, Figure 1 is a longitudinal sectional view my invention. Fig. 2 a view similar to Fig-.1, showing only the skeleton or frame- Fig. 3 is a transverse sectional view of Fig. 1. Figs. 4, 5, 6, and 7 show various forms of detachable shoes of the magnetic poles. Fig. 8 shows means for adjusting the poles with relation to each other. ig. 9 is a plan view of part of Fig. 1.

of an ore-separator embodying Similar characters of reference indicate cor- MOFFATT, l responding parts in the different views.

Referring to the drawings, 1 indicates two parallel cores, suitably wound, terminating at both ends in the side frame extensions 2, arranged in apposition to each other and secured together bymeans of the bolts 3. Tile side-frame extensions are provided with apto magnetic ertures 4, through'which the feed-conveyer 5 passes. This feed-conveyor here takes the form of an endless belt passing over the drum 6, the material being fed to the conveyer by means of tilt hopper 7. Extending transversely across the feed-conveyer are the separating-conveyers 8, also in the present in stance in the form of endless belts and passing over the drums 9, suitably mounted on the shafts 10.

12 indicates suitable idlers over which the separating-conveyers pass. The magnet is in this instance provided with two sets of upper and lower poles 13 and 14 of opposite polarity, constituting two fields of force. it will be noticed that each core connects one pole of one set with one pole of the other set in circuit with each other. and that the side-frame extensions connect the poles of the same set in circuit with each other. Means are provided whereby the field produced by one set of poles will be stronger or more intense than the field produced bythe other setof poles, although both are in circuit with each other. This may be accomplished. in various ways; but preferably the poles are i constructed that removable shoes, as 15, maybe attached to them. It will be noticed by an inspection of Fig. 1 that the poles 13 are a greater distance apart than the poles 14, or, conversely, the poles 14 are closer together than the poles 13. Preferably the upper poles of both sets are in the same horizontalplane, while the lower pole of the second set is varied, so as to produce a greater or less distance between the two poles of the said second set. By this means the intensity of the field maybe varied. The distance between the upper and lower poles may also be regulated when it is desired to vary the intensity of both fields by interposing different thicknesses of spacing-plates 15- between the contiguous flanges 16 of the side-frame extensions. A screw 17 is used to raise the side-frame extensions when it is de sued to insert a difiierent thickness of spacing-plate, and the spacing-plate, as shown in Fig. 9, is in two parts with suitable cutout portions, allowing for the passage of screws through the same. In Figs. 4, 5, 6, and 7 I show various kinds of shoes which may be attached to both pieces to conform to the nature or character of the field desired. The upper pole-pieces are preferably provided with an extension, as 19, projecting in the direction of the movement of the separatingconveyers and beyond the field of force proper, so as to facilitate the removal of the separated material out 01"" the machine.

' Under some conditions I may employ means for agitating the ore as it passes through the fields of force. For instance, as seen in Fig. 1, I provide a spring-seated plunger 20 in the lower pole-piece,having' cross-pieces 2.1 below the feed-conveyer and having, further, a piston 22, by means of which the plunger is raised into contact with the feed-conveyer when fluid or other pressure is introduced through the pipe 23. This has the effect of jogging the feed-conveyer, thereby agitating the ore and facilitating the separation of the same.

What is claimed is 1. In a magnetic ore-separator, the combination with a feed-conveyer and two separating-conveyers, of a magnet comprism two sets of opposed poles producing two fie ds of difierent intensity, two cores each connecting one pole of one set in magnetic circuit with one pole of the other set, and side frames conmeeting the poles of the same set in magnetic circuit with each other. I

. 2. In a magnetic oreseparator, the combination with a magneto comprising two sets of opposed poles producing two fields of different intensity, two cores each connecting one pole of one set in magnetic circuit with one-pole of the other set, and side frames; having apertures, connecting the poles'of the same set in magnetic circuit with each other, of a feed-conveyer adapted to pass through the said apertures in the side frames, and two separating-conveyers.

3. In a magnetic ore-separator, the combination with afeed-conveyer, and two separating-conveyers, of a magnet com rising two sets of opposed poles, the poles 0 one set being nearer together than the poles of the other set, two cores each connecting one pole of one set in magnetic circuit with one pole of the other set, and side frames connecting the poles of the same set inmagnetic circuit with each other.

4. In a magnetic ore-separator, the combination with a ma net comprising two sets of opposed poles, t e poles of one set being nearer together than the poles of the other set, two cores each connecting one pole of one set in magnetic circuit with one pole of the other set, side frames, having apertures, connecting the poles of the same set in magnetic circuit with each other, of a feed-conveyer adapted to pass through the apertures of the side frames, and two separating-conveyers.

5. In a magnetic ore-separator, the combination with two parallel cores having 0pposed poles, side-frame extensions, havin apertures, terminating the said cores at hot ends and connecting the said cores in ma netic circuit, arranged in apposition to eac other, and means for securing the said sideframe extensions together, of a feed-conveyer adapted to pass through the said apertures, and a separating-conveyer.

6. In a magnetic ore-separator, the combination with two parallel cores each having a plurality of poles, opposed to a like number of poles on the other core, side-frame extensions, having apertures, terminating the said cores atboth ends and connecting the said cores in magnetic circuit, arranged in apposition to each other, and means for fastening the said side-frame extensions to ether, of a feed-conveyer adapted to pass t rough the apertures in the sideframe extensions, and a plurality of separatin -conveyers.

Signed at New Yor city this 19th day of September, 1904.

RICHARD R. MOFFATT.

Witnesses:

RAYMOND C. SPAULDING, ANNIE WISSEMANN. 

